Properties of the Number 6625

Six Thousand Six Hundred Twenty-Five

Basics

Value: 6624 → 6625 → 6626

Parity: odd

Prime: No

Previous Prime: 6619

Next Prime: 6637

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 ³ × 53

Divisors: 1, 5, 25, 53, 125, 265, 1325, 6625

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100111100001

Octal: 14741

Duodecimal: 3A01

Hexadecimal: 19e1

Square: 43890625

Square Root: 81.39410298049853

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Coordination sequence for "tea" 3D uniform tiling. A299285

Number of points of norm <= n² in square lattice. A328

Numbers of the form 8^j + 9^k, for j and k >= 0. A226832

Generalized 24-gonal (or icositetragonal) numbers: m*(11·m - 10) with m = 0, +1, -1, +2, -2, +3, -3, ... A303814

Numbers n that are the hypotenuse of exactly 10 distinct integer-sided right triangles, i.e., n² can be written as a sum of two squares in 10 ways. A97225

Centered 24-gonal numbers. A69190

Number of integer partitions of n with integer reverse-alternating product. A347445

a(n) = 3·n² - 2. A100536

Number of distinct lines through the origin in 3-dimensional cube of side length n. A90025

Self-inverse permutation of natural numbers: a(1) = 1, a(2n) = A003961(1+a(A064989(2n-1))), a(2n+1) = 1+A003961(a(A064989(2n+1)-1)). A244319